Presser-foot for sewing machines



pt. 24, 1935. R. J. SAHLER PRESSER FOOT FOR SEWING MACHINES Filed Jul 26, 1955 fiz dagm JSwz'ler Patented Sept. 24, 1935 PRESSER-FOOT FOR SEWING MACHINES Rudolph J. Sailer, Townley, N. 5., assignor to The Singer Manufacturing Company, Elizabeth, N. 3., a corporation of New Jersey Application July 26, 1933, Serial No. 682,170

9 Claims.

This invention relates to new and useful improvements in presser-feet for sewing machines and more particularly to presser-feet which are used in connection with sewing machines for applying bindings to the edges of materials.

In the drawing:-

Figure 1 is a front elevation, partly in section,

of a portion of the sewing machine showing my improved presser-foot applied thereto.

Figure 2 is a top plan view of the presser-foot.

Figure 3 is a side elevation of the presser-foot.

Figure v4; is a disassembled perspective view of the presser-foot.

In some types of material, such as blankets, the nap on the top extends in a direction op posite to the nap on the bottom. When applying binding to the edges of this type of material the nap on one side tends to force one limb of the binding strip outwardly and the nap on the other side tends to draw the other limb inwardly. To overcome this crawling tendency I have pro-- vided a presser-foot having a rigid sole-portion to which is hinged a second sole-portion and means for holding the hinged sole-portion in different angular adjustments relative to the plane of the rigid sole-portion so as to vary the pressure and feed on the bound portion of the blanket.

According to the preferred embodiment of the invention illustrated, the presser-foot comprises a shank 'I adapted to be secured by the screw 2 to the usual vertically movable presser-bar 3 of a sewing machine having the reciprocating needle-bar l carrying needles 5, which operate through suitable needle-apertures in the throatplate 6 and cooperate with the loo-pers l in the formation of stitches. The throat-plate 6 is formed with the usual slots through which the toothed sections of the four-motion feed-dog 8 operate to advance the work.

The presser-foot shank I is formed with laterally projecting arms 9 and It, and to the arm 9 there is rigidly secured by the screws II a soleportion I2 formed with spaced blocks I3 and I4. The hinged portion I5 of the presser-foot is formed with needle-apertures It and its outer end is provided with a U-shaped block II which receives the end IQ of the laterally projecting arm IE3. The other end of the sole-portion I5 is formed with a block I3 which is received between the blocks I3 and I4 on the sole-portion l2 and is pivotally connected to these blocks by a hingepin I9 which extends through suitable apertures in the blocks I3, I4, and I8, the hinge-pin I9 being held in place by a set-screw 20.

Overlying the end III of the arm III and fixed to the U-shaped block II by the screws ZI is a plate 22 formed with a notch 23 which receives that portion of the adjusting screw 2 between the head 26' and the flange 25, the screw 25 being 5 threaded into the arm I t. It will be obvious from the foregoing that the hinged sole-plate I5 may be adjusted to diiierent angular positions relative to the plane of the rigid sole-portion I2 by the adjusting screw 24. A screw 26 is threaded 10 through one limb of the U-shaped block II to clamp the end IQ of the arm It) in its adjusted position.

In the operation of the feeding mechanism the sole-plate I2 cooperates with a portion of the 15 feed-dog 8 to advance the work to which the binding strip is to be applied and the hinged soleplate I5 cooperates with another portion of the feed-dog to advance both the binding strip and the edge of the work. By adjusting the hinged 20 sole-plate I5 about an axis extending in the direction of the line of feed to different angular positions relative to the sole-plate I2 and feed- -dog 8 the pressure on the bound portion of the work is varied for the purpose of preventing distortion of the work in applying bindings to different grades of materials.

Having thus set forth the nature of the invention, what I claim herein is:-

1. A presser-foot for sewing machines, comprising a shank, a rigid sole-portion carried thereby and having an upturned toe at its front end, a second sole-portion also carried by said shank and hinged to the rigid sole-portion for movement about an axis extending from front to rear of the rigid sole-portion, and means for adjusting said second sole-portion to different angular positions relative to said rigid sole-portion.

2. A presser-foot for sewing machines, comprising a shank formed with two laterally projecting arms, a sole-portion fixed to one of said arms and having an upturned toe at its front end, a second sole-portion hinged to said first mentioned sole-portion for movement about an axis extending from front to rear of the first mentioned sole-portion, and means for adjustably securing said second sole-portion to the other of said arms.

3. A presser-foot for sewing machines, comprising a shank formed with two laterally extending arms, a sole-plate fixed to one of said arms, a second sole-plate having one of its ends hinged to said first mentioned sole-plate and a U-shaped block secured to its other end, a plate fixed to said block, and a shouldered adjusting screw 55 threaded into the other arm and cooperating with said plate whereby said second sole-plate may be adjusted to different angular positions relative to the first mentioned sole-plate.

4. In a sewing machine, a feed-advancing element and a presser-foot cooperatively opposed thereto, said presser-foot comprising a shank, a plurality of work-engaging sole-portions carried thereby, a pivotal connection between said soleportions and extending in the direction of feed, and means for relatively adjusting said soleportions to different angular relations to each other.

5. In a sewing machine, a feed-advancing element and a presser-foot cooperatively opposed thereto, said presser-foot comprising a shank, a rigid work-engaging sole-portion carried thereby, a second work-engaging sole-portion pivotally secured tosaid rigid sole-portion for movement about an axis extending in the direction of the line of feed, and means for adjusting said second sole-portion to different angular positions relative to said rigid sole-portion.

6. In a sewing machine, stitch-forming mechanism including a plurality of reciprocatory needles, a four-motion feed-dog, and a presserfoot having a plurality of work-engaging soleportions cooperating with said feed-dog, said sole-portions being pivotally secured to each other for relative movement about an axis extending in the direction of the line of scam formation.

7. In a sewing machine, stitch-forming mechanism including a reciprocatory needle, a four motion feed-dog, a presser-foot having a plurality of work-engaging sole-portions cooperating with said feed-dog and pivotally secured to each other about an axis extending in the direction of the line of feed, and means for adjusting the angular position of one of said sole-portions to vary the feeding action of the feed-dog.

8. In a sewing machine, stitch-forming mechanism including a reciprocatory needle, a looptaker cooperating therewith to form stitches, a feed-advancing element, and a presser-foot cooperating therewith in the advance of the work, said presser-foot comprising a shank, a workengaging sole-portion carried thereby, a second work-engaging sole-portion also carried by said shank and having one of its edges pivotally mounted for movement about an axis extending in the direction of the line of feed and its other edge adjustable up and down whereby said second sole-portion may be adjusted to different angular positions relative to the cloth-engaging face of the feed-advancing element.

9. In a sewing machine having in combination, stitch-forming mechanism including a reciprocatory needle, 2. loop-taker cooperating therewith to form stitches, a feed-advancing element, and a presser-foot cooperating therewith to advance the work, said presser-foot being provided with a work-engaging sole-portion having one of its edges mounted for movement about an axis extending in the direction of the line of feed and its other edge adjustable up and down whereby the relative pressures on the Work adjacent the opposite edges of the sole-portion may be varied.

RUDOLPH J. SAILER. 

